Photodissociation of thymine

Literature Information

Publication Date 2006-02-22
DOI 10.1039/B518443F
Impact Factor 3.676
Authors

Theofanis Kitsopoulos, Luis R. Lago


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Abstract

We discuss the photochemistry and photodissociation dynamics of thymine as revealed by two-colour photofragment Doppler spectroscopy and by one-colour slice imaging. Thymine is optically excited into the ππ* state, known to deactivate quickly. The H atom photofragment spectra are dominated by two-photon excitation processes with subsequent statistical dissociation. This can be explained by absorption of a second photon from a long-lived dark state to a highly excited state that quickly deactivates to the electronic ground state. No evidence was found for an important role of the πσ* excited state identified in adenine and many other heterocyclic molecules.

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Contents

Front/Back Matter

DOI: 10.1039/C0CP90142C

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Front cover

Cover

DOI: 10.1039/C1CP90009A

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
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